Sony HDW-750 Maintenance Manual page 519

n
When the adjustment fails and "CONDITION NG" is displayed,
check the followings in the order as shown below.
1. Perform C11 : PB CH CONDITION check again using the
alignment tape (HR5-1A).
2. If any abnormality is found, check the possible causes referring to
n of C11 : PB CH CONDITION.
If abnormality cannot be found in the above check, perform the check
again in the following order shown below.
1. Perform cleaning with the use of a cleaning tape and check the
"REC Channel Condition Check" using a working tape.
→ When no abnormality is found, this is the end of the check.
2. Perform cleaning with the use of a cleaning tape again and repeat
the above check.
→ When no abnormality is found, this is the end of the check.
3. Perform cleaning with the use of a cleaning cloth (referring to
Section 2-1) and repeat the above adjustment again.
→ When no abnormality is found, this is the end of the check.
If the check fails still, check the following possible causes.
. Defective adjustment of the servo system, or servo circuit is
defective.
. The playback heads inside the drum assembly were worn out.
. Defective adjustment of tape run system, or part mounting is
defective.
. EQ-88 board is defective.
. Drum assembly is defective.
2 2 To check the desired channel only 2 2 2
1. Insert a working tape (blank tape: BCT-40HD that is commercial-
ly available).
2. Select the desired channel to check and press the rotary encoder.
3. The check result appears in the selected channel only. (It is not
displayed in the ALL column.)
HDW-750/750CE V1
11-3. Contents of Menus
RF CHECK MENU
C12:REC CH CONDITION
COMPLETE
CH RSLT CH
A B
C D
→
E GRN F
G H
ALL
RSLT
11-17